Friction shock-absorbing unit.



J. F. ocoNNon. FRICTION SHOCK ABSORBING UNIT. L I APPLICATION FILED MAR.I2. |913. 1,290,326, `Rertemedl Jan. 7,1919.

reduced and in this process, itis evident that the blocks B will sliderelatively to the followers A on the surfaces 2'of the latter, but inall positions of the parts, the blocks B will remain dianietricallyopposite each other with respect o the 'spring lates C. In this manner,I avoid the pinching effect which has heretofore accompanied 'theoperation of friction shock absorbing devices of a somewhat similarcharacter and I am, therefore, enabled. to obtain a true sliding,`frictional effect between all the coils of the concentric spring platesand also between the outermost spring plate and all of the blocks B.There is, of course, the additional friction generated between theblocks B and the followers A due to the blocks B sliding onthe'followers. The followers may be so designed that they will come intoengagement with eachother to thereby limit tre compression of the springplates and if desired, the followers A may have side enlmfgernents 18-18to cooperate with limiting stops i9 of a railway stop casting, as shownin Fig. 2.

I have herein shown and described one manner of carrying ont myinvention but the same is merely illustrative and I con-v template allchanges and modifications that come4 within the scope of the claimsappended hereto.

I claim:

l. In a friction shock absorbing unit, the combination with a pairofi-followers relatively movable toward each other, of a plurality ofsubstantially circular springs with their aires arranged perpendicularto the line of tielative movement between said fol lowers, blocksmounted on said followers and curved on their inner faces to conform te.said springs, said blocks being shiftahle on said followers when thelatter are moved relatively toward each other to thereby compress saidsprings and gradually decrease their circumference.

$3. In a friction shock absorbing unit, the

Vee l 1,290,326

combination with a pair of followers relan tively movable toward eachother, of a the line of relative movement between said followers, blocksImounted'on said followers and curved on their inner faces to conform tosaid spring plates, said blocks being shiftable on said followers whenthe latter are moved relatively toward each other to thereby compresssaid springs and uniformly decrease their circumference.

3. In a friction shock absorbing unit, the combination with a pair offollowers relatively movable toward each other, each follower having apair of oppositel inclined surfaces on its inner face, of a' p uralityof substantially circular springs interposed between said followers,fourblocks, one mounted on each of said i clined surfaces of thefollowers, said blocks being curved on their inner faces to conform' tosaid springs, said blocks being slidable over said inclined surfaceswhen the followers are/moved relatively toward each other.

Ll. In a friction shock absorbing unit,.the combination with a pair offollowers relatively movable toward each other, each of said followershaving a pair of oppositely inclined surfaces on its inner face, of aplurality of concentrically arranged frict1onally engaging spring platesdis sed between said .followers, and four blicks, one mounted on each ofsaid inclined surfaces of the followers', said blocks beingvcurved ontheir inner faces to conform -to the outer most spring plate, saidblocks beine mov able over said inclined faces of t e followers as thefollowers are moved relatively toward each other to thereby uniformlydecrease the circumference of said spring plates and compress thelatter.

In 'witness that I claim the foregoing I have hereunto subscribed myname'this 26th day of Feb., 1918.

JOHN F. OCONNOR.

